Structural Design and Calculations

As you may have noticed elsewhere I try to avoid the use of the word “engineering”, this is because for me engineering takes place at the frontiers of science and technology. I don’t operate at the frontiers and most people don’t want their projects at the frontiers. Most people simply want “tried and tested” adapted […]

Residential Slabs and Footings

For the most part residential slabs and footings shouldn’t require any “engineering”. AS2870 Residential slabs and footings is mostly a prescriptive code like volume 2 of the National Construction Code (NCC or BCA {Building Code of Australia} ), and the residential timber framing code AS1684.2. As such building designers, builders and concrete contractors should be […]

Building a Structural (Engineering) Design eWorkbook – Part 1

Introduction Actually from my viewpoint not engineering because: Engineering takes place at the frontiers of science and technology. It is a high risk activity, based on highly deficient knowledge, with uncertain outcomes. The thing we are concerned with here are established technologies, with an established body of technical knowledge, making planning, design and management based […]

State of Play: 2017/wk40

The daily challenge came to an end on day 67. A daily challenge based on researching and reading would have greater staying power, but it doesn’t produce anything visual to communicate activity. All the production occurs inside the human mind, and makes the mind more knowledgeable. Any case back to random and irregular “state of […]

Wind Speeds and Topography

The wind loading code is based on the flow of fluid parallel to a flat plate. The plate can have roughness, this roughness is measured by roughness length (z0), and converted to terrain category. Appendices to AS1170.2:1989 contained charts for surface roughness length and relationship to terrain category: this information for the newer codes, can […]

Barrier Heights, guard rails and hand rails

As I seem to have difficulty explaining the difference between handrails and guardrails and when each is needed, I have added an XY chart to my balustrade design spreadsheet so that I can illustrate the different situations. Handrails and guardrails are not the same thing. Whilst it is common for industrial guardrails to use a […]

TechNote#300 Barriers

Barriers versus: Partitions, Walls, Doors, Windows, Balustrades, Guard Rails, Hand rails, Grab Rails Codes provide no real guidance regarding classification of a structure as a barrier or a wall. AS1170.1 specifies barrier loadings to the top edge of the barrier: this doesn’t always make sense. {NB: AS1170.1 does not identify imposed loads for vertical surfaces […]

A Study Tour Wind Loading of Structures

The beginnings (eg. table of contents) of a  guided tour through various aspects of the wind loading of structures. Qualitative Overview Beaufort Windscale Chart The Recent Adelaide Wind Storms Related to Australian Wind Loading Code Design Wind Speeds for South Australia TechNote#006 Internal Pressure Coefficients Industrial/Commercial Buildings Quantitative Tools Wind Loading Risk Assessment Wind Loading BCA Importance Levels […]

The Recent Adelaide Wind Storms Related to Australian Wind Loading Code

Relating the recent Adelaide storms to the Adelaide Metro Wind Speed Map, the simplified wind classification system (AS4055), and our wind loading code (AS1170.2) The map typically classifies sites as either: N1 Vzp = 28 m/s [100.8 km/h] N2 Vzp = 33 m/s [118.8 km/h] N3 Vzp = 41 m/s [147.6 km/h] These commonly used […]